I've been plowing through Iain Banks "Culture" series (some of the best sci-fi I have ever read, by the way), in which starships travel to the other nearby galaxies as well as traversing through all of our own. While the limitations of jump drive make that an impossibility in Traveller, the idea of traveling to the rim and looking across the void at other galaxies, a Solomani expedition perhaps, sounds pretty interesting. What could be out there? Are there aliens there? Have aliens come from the Andromeda Galaxy or one of the Magellanic Clouds to the rimward edge using hyperdrive or warp? All interesting campaign possibilities.

Tying it back to Traveller, the "Exploring Deep Space" teaser from the Great Rift pack gives you some cool tools to get started on a campaign like this. Hopefully the set gives you more tools to use for such stories whether or not you want to adventure in Reft, Corridor, or Touchstone.

"Spacers lead a sedentary life. They live at home, and their home is always with them—their starship, and so is their country—the depths of space."